oblige

vt. 迫使；强制；赐，施恩惠；责成

vi. 帮忙；施恩惠

中文词源

oblige 强迫，迫使，责任，帮忙，效劳

ob-,向前，朝向，-lig,绑定，词源同ligament,league.原指用誓言捆绑的，给予承诺的。后引申诸相关词义。

oblige: oblige: [13] To oblige someone is etymologically to ‘bind them to’ something with a promise. The word comes via Old French obliger from Latin obligāre, a compound verb formed from the prefix ob- ‘to’ and ligāre ‘tie’ (source of English liable, ligament, etc). By classical times its original literal sense had been extended figuratively to ‘make liable, put under an obligation’. The synonymous obligate [16] comes from its past participial stem, as does obligatory [15].
=> liable, ligament, obligatory
oblige (v.): c. 1300, "to bind by oath," from Old French obligier "engage one's faith, commit (oneself), pledge" (13c.), from Latin obligare "to bind, bind up, bandage," figuratively "put under obligation," from ob "to" (see ob-) + ligare "to bind," from PIE root *leig- "to bind" (see ligament). Main modern meaning "to make (someone) indebted by conferring a benefit or kindness" is from 1560s. Related: obliged; obliging.

1. Mr Oakley always has been ready to oblige journalists with information.: 奥克利先生总是乐于向记者透露消息。